| 摘要 |
PURPOSE:To thin optionally pixels by providing an image thinning means to prepare for and circulate a shift register having a designated bit pattern and extract the pixel only when a shift register output is '1'. CONSTITUTION:The data from a thinning data memory 13 are set with an HS signal to a shift register 14. Each time a clock signal CLK is generated, the data in the shift register 14 are circulatively shifted bit by bit. When an AND circuit 15 is selected by a clock selection and the output of the shift register 14 is '1', an address counter 12 is counted up through an OR circuit 17, a signal selecting circuit 9 functions, one-dimensional image sensor signal data are selected and stored into an image memory 10. When the output of the shift register 14 is '0' and the output of an one-dimensional image sensor 4 is generated, image data are not stored into the image memory 10. Thus, by setting the bit pattern of the shift register in accordance with the size of the image memory, a suitable thinning processing is executed. |
